The vacuum pump is an indispensable tool in several areas of mechanics and automotive maintenance.
Suitable for engine performance diagnostics, air conditioning system maintenance, brake system bleeding, and fluid transfer.
Find out how the vacuum pump works, what it is used for, and the best options for your workshop.
What Is A Vacuum Pump Used For?
A vacuum pump is a device used to remove air or other gases from a closed circuit in order to create a vacuum or negative pressure.
In the automotive industry, it is essential for ensuring the proper functioning of braking systems, engines, and air conditioning systems.
What Is The Function Of A Vacuum Pump?
A vacuum pump can be used for:
- Braking Assistance: helps create the negative pressure required for the servo brake to work in vehicles.
- Diagnostics And Testing: helps check for leaks in EGR valves, manifolds, and other components with pneumatic systems.
- Turbocharger Maintenance: in systems with pneumatic actuators, the vacuum pump helps regulate turbo operation.
How Does A Vacuum Pump Work?
The operation of a vacuum pump is based on the creation of a pressure differential. By removing air from a chamber or circuit, a pressure lower than atmospheric pressure is created. This vacuum can be used to activate systems, perform gas leak tests, or empty compartments.
What Are The Three Types Of Vacuum Pumps?
Vacuum pumps can be manual, electric, or mechanical, depending on the type of application and the equipment required.
1. Manual Vacuum Pump
The manual vacuum pump is a practical and economical option, ideal for spot testing and quick diagnostics in workshops.
This type of pump works by using a manually operated lever, allowing you to create a vacuum in small systems such as EGR valves, hoses, or sensors. It is widely used to simulate vacuum and check for leaks.
2. Electric Vacuum Pump
This model operates when connected to the mains (usually 220V) and is used in applications that require greater power and continuity.
It removes air, moisture, and gas residues before filling with refrigerant gas, which ensures the efficiency and durability of the A/C system.
3. Mechanical Vacuum Pump
This is a pump directly coupled to the vehicle’s engine, normally found in diesel engines.
It is used to feed systems such as the servo brake (brake assist) or pneumatic actuators for variable turbo geometry. It operates continuously while the engine is running.
Can A Vacuum Pump Be Used In Air Conditioning Systems?
One of the most common applications for this equipment is to test automotive air conditioning systems. In these cases, the pump removes air, moisture, and residual gases from the circuit before charging it with new refrigerant gas.
What Are The Advantages Of Using A Vacuum Pump?
This vacuum equipment is essential for many automotive and industrial maintenance tasks.
Using it correctly can bring several benefits to equipment performance and workshop efficiency, such as:
1. Improve Brake System Performance
In vehicles equipped with servo brakes, the pump provides brake assistance.
By creating negative pressure, it reduces the effort required on the pedal and improves braking safety.
2. Remove Air And Moisture From A/C Systems
When performing air conditioning maintenance, the vacuum pump removes air, moisture, and debris before adding refrigerant.
This prevents system malfunctions and extends the life of the compressor and other components of the car’s climate control system.
3. Detect Leaks
Manual models are ideal for diagnosing small leaks in valves, pipes, and sensors.
This check prevents further damage and enables accurate preventive maintenance.
4. Reduction In Intervention Time
Vacuum pumps, especially electric ones, speed up the evacuation process in closed systems, such as transmissions or air conditioning circuits.
As a result, time is saved and car repair shop productivity is increased.
5. Versatile Application
There are pumps suitable for various systems, from brakes to turbo systems. In other words, this equipment is highly versatile for mechanics and specialized technicians.
How To Choose The Right Vacuum Pump For Your Workshop?
Choosing the right equipment for your workshop depends on the type of services you provide, how often you use it, and your budget. The wrong choice can compromise the performance and durability of the equipment. Therefore, when purchasing, you should pay attention to the following points:
- The type of services you will be performing. A manual model is perfect for quick tests and simpler tasks, while an electric model is ideal for higher workloads;
- Compatibility with the tasks to be performed. For example, if you are going to use the vacuum pump for car air conditioning, make sure it is suitable for this purpose;
- Choose models with tubes, adapters, and a pressure gauge to ensure they are suitable for different tasks;
- Choose the KROFtools brand, which offers adequate support, warranty, and technical assistance.
Where To Buy A Vacuum Pump?
You can find professional vacuum pumps at auto tool stores or through official KROFtools equipment distributors.
What Vacuum Pumps Are Available In The Kroftools Catalog?
KROFtools offers high-quality vacuum pump options, suitable for both testing and maintenance on vehicles:
Vacuum And Pressure Pump Kit
This kit is ideal for testing a variety of basic vehicle configurations and functions. It includes a manual pump with pressure gauge, hoses, and several adapters.
Click on the image for more information about the Vacuum and Pressure Pump Kit (Ref. 3049).
Vacuum Pump Kit (0-30 Inhg)
Similar to the previous model, this kit stands out for including even more accessories and a pressure gauge.
Ideal for engine performance diagnostics, air conditioning system maintenance, brake system bleeding, fluid transfer, and windshield repair.
Click on the image for more information about the Vacuum Pump Kit (Ref. 3050).
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